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Harmony of the Seas

Royal Caribbean says the third vessel in its Oasis class series, to be called Harmony of the Seas, will measure 227,000 tons, beating its two record-size sisters by more than 1,700 tons thus making it the . The 16-deck-high cruise ship will hold a record 5,479 passengers at double occupancy, almost 100 more than the two earlier Oasis class vessels.
 
Harmony of the Seas would have giant, multi-deck water slides and feature Broadway’s hit musical Grease. Harmony will also have larger cabins than Oasis and Allure in some categories. In addition, windowless "inside" cabins will have Virtual Balconies, which offer a real time view of the outdoors.